Description
Delivering race-inspired performance in an accessible package, the FMF Racing Powercore 4 HEX Slip-On Muffler offers a dynamic boost in torque and horsepower while maintaining outstanding durability. Engineered with Hi-Flo core technology and robust stainless steel and aluminium construction, this system is designed for riders seeking quality upgrades and longevity without excessive cost. Perfect for closed course applications, the Powercore 4 HEX includes a removable spark arrestor and features a user-friendly, lighter design to enhance your riding experience.
Features
- Overall increase in power and torque for improved on-track performance
- Hi-Flo core internal design for enhanced sonic evacuation and higher exhaust flow
- Rugged stainless steel and aluminium construction for resistance to wear and the elements
- Space Age internal packing material ensures maximum product longevity
- Includes removable screen insert spark arrestor for added versatility
- Compatible with FMF and OEM headers (see fitment notes)
- Notice: Closed Course Use Only
Specifications
- Item ID: 044451
- Type: Slip-On
- Configuration: Single
- Construction: Aluminium body, stainless steel midpipe and endcap
- Finish: Natural
- Spark Arrestor: Screen insert included
- Quiet Insert: Sold separately
- Weight: 6.4 lbs (2.9 kg)
- No carburettor warning
Vehicle Fitment
Yamaha
- WR250F (2023–2024)
- YZ250F (2019–2026)
- YZ250FX (2020–2026)



